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Patent applications and USPTO patent grants for Knorre; Helmut.The latest application filed is for "process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution".
Patent | Date |
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Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution Grant 5,250,272 - Knorre , et al. October 5, 1 | 1993-10-05 |
Process for the treatment of continuous waste water streams having changing contents of different oxidizable materials with hydrogen peroxide Grant 4,416,786 - Knorre , et al. November 22, 1 | 1983-11-22 |
Process for preventing caking and obtaining flowability of alkali chlorides and salt mixtures thereof Grant 4,107,274 - Knorre , et al. * August 15, 1 | 1978-08-15 |
Method of dissolving a silver coating in a photo tank Grant 4,021,264 - Knorre , et al. May 3, 1 | 1977-05-03 |
Process for the precipitation of heavy metal ion-polycarboxylate complexes Grant 3,956,121 - Haschke , et al. May 11, 1 | 1976-05-11 |
Process For Adhesive Varnishing, Printing And Gluing Of Plastics Grant 3,730,757 - Knorre May 1, 1 | 1973-05-01 |
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